ComBase Predictor models are based on observations made in culture media, and comprise a set of 20 growth models, seven thermal death models and two non thermal survival models. Temperature, pH and aw (usually as a function of NaCl) are the core factors but, for some organisms, the effect of a fourth factor, such as CO2, nitrite, etc. are also featured.

The MRV is a new database consisting of microbial growth/no growth data derived from ComBase. The software allows the user to rapidly view growth/no growth contour plots superimposed by actual ComBase data. Contours of any two of three variables (temperature, pH and water activity) can be visualized, while the third is held constant.

The model predicts Listeria outgrowth based on both uncured and cured cooked meat products. The model will help to calculate the level of lactate and diacetate needed to control Listeria in cured and uncured cooked meat and poultry products for their required shelf life.

This predictive microbiology application was designed as a research and instructional tool for estimating the effects of multiple variables on the growth, inactivation or survival of foodborne pathogens. Most of the models are based on experimental data of microbial behavior in liquid microbiological media.

Perfringens Predictor provides a prediction of growth of C. perfringens during the cooling of meats. This model is part of ComBase predictor, and may give more accurate predictions than the C. perfringens model included in PMP (99, Schaffner, personal communication).

Risk Management Tool for the Control of Campylobacter and Salmonella in Chicken Meat (Version 1.0)

This tool has been developed in response to a request from the Codex Committee on Food Hygiene and is designed to be used in conjunction with the Codex Guidelines for the Control of Campylobacter and Salmonella in chicken meat.

Software includes: models for relative rates of spoilage, models for growth of spoilage bacteria in specific seafood, models to predict histamine formation by Morganella spp., a model to predict the simultaneous growth of Listeria monocytogenes and lactic acid bacteria in lightly preserved seafood, and a model to predict the growth boundary of L. monocytogenes in lightly preserved seafood